40 CFR Table W-3A to Subpart W of Part 98
Default Total Hydrocarbon Leaker Emission Factors for Onshore Natural Gas Transmission Compression
June 9, 2020
Open Table
| Onshore natural gas transmission compression | Emission factor (scf/hour/component) |
|
|---|---|---|
| If you survey using any of the methods in §98.234(a)(1) through (6) |
If you survey using Method 21 as specified in §98.234(a)(7) |
|
| Leaker Emission Factors—Compressor Components, Gas Service | ||
| Valve1 | 14.84 | 9.51 |
| Connector | 5.59 | 3.58 |
| Open-Ended Line | 17.27 | 11.07 |
| Pressure Relief Valve | 39.66 | 25.42 |
| Meter or Instrument | 19.33 | 12.39 |
| Other2 | 4.1 | 2.63 |
| Leaker Emission Factors—Non-Compressor Components, Gas Service | ||
| Valve1 | 6.42 | 4.12 |
| Connector | 5.71 | 3.66 |
| Open-Ended Line | 11.27 | 7.22 |
| Pressure Relief Valve | 2.01 | 1.29 |
| Meter or Instrument | 2.93 | 1.88 |
| Other2 | 4.1 | 2.63 |
1Valves include control valves, block valves and regulator valves.
2Other includes any potential equipment leak emission point in gas service that is not specifically listed in this table, as specified in §98.232(e)(8).
[81 FR 86516, Nov. 30, 2016]
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